Ecce tu pulchra es*

Source: 
Aachen (Aix-la-Chapelle), Domarchiv, G 20
Folio: 
384r
Sequence: 
1
Feast: 
De BMV
Office/Mass: 
V
Genre: 
A
Position: 
1
Cantus ID: 
002547
Mode: 
1
Differentia: 
G2
Differentia database: 
1--h-h-g-f-gh-g--4 66d
Extra: 
172r
Indexing notes: 
This is the beginning of a new section: changes of hands, sizes of scripts/notation, and layout; The title of the office is difficult to see (but these are certainly Marian chants).